1520606420331 has 4 divisors (see below), whose sum is σ = 2027475227112. Its totient is φ = 1013737613552.

The previous prime is 1520606420309. The next prime is 1520606420351. The reversal of 1520606420331 is 1330246060251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1520606420331 - 2⁵ = 1520606420299 is a prime.

It is a super-2 number, since 2×1520606420331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1520606420292 and 1520606420301.

It is not an unprimeable number, because it can be changed into a prime (1520606420351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253434403386 + ... + 253434403391.

It is an arithmetic number, because the mean of its divisors is an integer number (506868806778).

Almost surely, 2^{1520606420331} is an apocalyptic number.

1520606420331 is a deficient number, since it is larger than the sum of its proper divisors (506868806781).

1520606420331 is an equidigital number, since it uses as much as digits as its factorization.

1520606420331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506868806780.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 1520606420331 in words is "one trillion, five hundred twenty billion, six hundred six million, four hundred twenty thousand, three hundred thirty-one".